Speakers
Description
The 114-compound material of YBaCo$ _{4} $O$ _{7} $ is a mixed cobalt valence system that exists in a hexagonal arrangement (space group P 6$ _{3}$mc), which exhibits interesting physical properties such as magnetism and oxygenation absorption. Cobalt tetrahedra in the 6c position are in a Kagome arrangement which is the source of the magnetic frustration seen in this system. The Co 2a position, located in the triangular layer, involves long-range magnetic ordering at lower temperatures. As both positions (2a and 6c) show a mixture of Co$ ^{2+} $ and Co$ ^{3+} $, the chemical substitution of a particular ion could be achieved. Would this substitution occur in both layers or exclude the Kagome layer? Here we explored the removal of Co$ ^{3+} $ for Ga$ ^{3+} $ for the potential formation an isolated magnetically frustrated layered system formed by only Co$ ^{2+} $. The synthesis and characterisation of YBaCo$ _{4-x} $Ga$ _{x} $O$ _{7} $ attempted for x = 0 – 1.0 with the structural phase mixtures resolved using powder lab sourced, synchrotron sourced and neutron diffraction techniques.
| Pronouns | He/Him |
|---|---|
| Do you intend to attend UM2022 | Unsure at this stage |
| Level of Expertise | Student |
| Terms and conditions (Please confirm that you have read all the requirements and agree to the conditions) | Yes |
| Presenter Gender | Man |
